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Paper Abstract and Keywords
Presentation 2015-03-05 13:45
Bandwidth Deviation Controlled Reconfigurable Bandpass Filter Using LC Parallel Coupling Circuit
Takumi Kato, Ryosuke Kobayashi, Tetsunari Saito, Yasushi Yamao (UEC) MW2014-209 ICD2014-122 Link to ES Tech. Rep. Archives: MW2014-209 ICD2014-122
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, mobile terminals have been required to cover wide range of RF frequencies for globalization and high capacity. Thus reconfigurable RF circuits for the terminals attract much attention because they are expected to be able to flexibly change many frequency bands under the control of the communication systems. Two-stage reconfigurable bandpass filter (BPF) with eight-frequency selection capability has been proposed for this goal. Bandwidth variations of the reconfigurable BPF have been analyzed by calculating external Q and coupling coefficients. In this paper, a bandwidth controlled two-stage three-bit reconfigurable BPF using LC parallel coupling circuit is proposed. It is designed to cover frequency range from 2 to 3 GHz and to switch among eight frequencies with approximately equal intervals. The bandwidth variation ratio of the maximum to the minimum bandwidths is 1.17.
Keyword (in Japanese) (See Japanese page) 
(in English) bandpass filter / transmission line / frequency tunable / quality factor / coupling coefficient / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 498, MW2014-209, pp. 37-42, March 2015.
Paper # MW2014-209 
Date of Issue 2015-02-26 (MW, ICD) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MW2014-209 ICD2014-122 Link to ES Tech. Rep. Archives: MW2014-209 ICD2014-122

Conference Information
Committee MW ICD  
Conference Date 2015-03-05 - 2015-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) University of Fukui 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave Integrated Circuit / Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2015-03-MW-ICD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Bandwidth Deviation Controlled Reconfigurable Bandpass Filter Using LC Parallel Coupling Circuit 
Sub Title (in English)  
Keyword(1) bandpass filter  
Keyword(2) transmission line  
Keyword(3) frequency tunable  
Keyword(4) quality factor  
Keyword(5) coupling coefficient  
1st Author's Name Takumi Kato  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Ryosuke Kobayashi  
2nd Author's Affiliation The University of Electro-Communications (UEC)
3rd Author's Name Tetsunari Saito  
3rd Author's Affiliation The University of Electro-Communications (UEC)
4th Author's Name Yasushi Yamao  
4th Author's Affiliation The University of Electro-Communications (UEC)
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Date Time 2015-03-05 13:45:00 
Presentation Time 30 
Registration for MW 
Paper # IEICE-MW2014-209,IEICE-ICD2014-122 
Volume (vol) IEICE-114 
Number (no) no.498(MW), no.499(ICD) 
Page pp.37-42 
#Pages IEICE-6 
Date of Issue IEICE-MW-2015-02-26,IEICE-ICD-2015-02-26 

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